> > xtabs(~V1+V2+V3, df) # There are 9 cells with 0 entries. That is the > > problem. > > , , V3 = 9 > > V2 > V1 8 16 24 > 200 5 0 5 > 350 5 5 0 > 500 0 5 5 thanks for the insight yah
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